XRCC1 and schizophrenia: The maiden report from the Iranian population [17] wherein an association between aberrant XRCC1 locus and schizophrenia has been suggested, and the present study on the Indian Tamil population strongly indicate that the gene(s) in the DNA repair mechanism (XRCC1) could be a potential candidate to be monitored in connection with the etio-physiology of this elusive disorder.